Yeah I got an answer from your support... you are making the eCPM better by cutting the lower CTR publishers off at the knees without warning My site was approved. I followed all the placement rules. You didn't like my click through rate though so you delete my placement without even an e-mail to tell me so I can replace it with other ads.
@neilpearson we cleared placements so that you can remake one to redo the ctr or find another way to place the ads. doesn't mean it was removed permanently. It was either that or have lower ecpm as the days go by when branding advertisers pull out. We do this to ensure that the ecpm will go up again so that all publishers can have better ecpm.